
Earth is a education/science/factual topics series airing on UK television.
Chris Packham presents this four-and-a-half-billion-year history of the planet, with each episode taking viewers on a journey through a pivotal moment when the Earth's future hung in the balance. The story begins with one of the darkest periods in the planet's history 252 million years ago - the worst mass extinction it has ever seen, when as much as 90 per cent of all species died